/// <summary>
/// Causes all property change events to be suppressed until the next
/// ResumeStateEvents call.
/// </summary>
protected void PauseStateEvents()
{
lock (_stateLock)
{
if (_pausedStateDirtySet != null)
{
throw new InvalidOperationException("The state is already paused.");
}
_pausedStateDirtySet = new PausedStateDirtySet();
}
}
/// <summary>
/// Unpauses property change events paused by the previous call to
/// PauseStateEvents, and raises events for all properties that have
/// been changed during the time the events were paused.
/// </summary>
protected void ResumeStateEvents()
{
lock (_stateLock)
{
PausedStateDirtySet set = _pausedStateDirtySet;
if (set == null)
{
throw new InvalidOperationException("The state was not paused.");
}
_pausedStateDirtySet = null;
foreach ((string property, object data) in set.Select(x => (x.Key, x.Value)))
{
OnPropertyChanged(property, data);
}
}
}